Gas cooking stove or range.



PATENTBD APR. 2, 1907.

V. W. BLANOHARD. GAS COOKING STOVE OR RANGE.

APPLICATION FILED JAN. 22. 1906.

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VIRGIL W. BLANCHARD, OF NEW YORK, N. Y.

GAS COOKING STOVE OR RANGE.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed January 22,1906. Serial No. 297.251.

T at whom it may concern.-

Be it known that I, VIRGIL W. BLANCHARD, of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Gas Cooking Stoves or Ranges; and I hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, which form part of this specification.

This invention is an improvement in gas cooking stoves or ranges; and its object is to produce a gas heating-range wherein a num ber of successive griddles or holes can be properly heated by means of one jet located in the primary combustion or heating chamber of the a paratus and adapted to produce a volume 0 hot gases which is passed suceessively above and under the various plates forming compartments and jetted upward against the griddles or plates of the range, the hottest gases being successively delayed against the lower surface of aforesaid griddles 01' plates, so that I can dispensewith the necessity for an independent burner for each griddle, as is invariably required in the gas cooking-ranges now on the market, thereby greatly economizing fuel and conserving heat, and, furthermore, simplifying the construction and operation of the ranges, and consequently reducing the cost of the apparatus and facilitating the ease of operating the same.

A particularly novel feature of the present invention is the mode or manner in which the hot gases are conveyed through the range in such manner that they are jetted upwardly against each griddle or into each cookingchamber, the hottest portions of the jet delayed there and then caused to descend before rising into the next chamber, so that I am enabled to arrange the several grid dles in a horizontally-disposed series, so that the range afiords the same facility for operation and access to utensils thereon as is found in the best coal-ranges now on the market.

The invention will be fully understood from the accompanying description of the range illustrated in the drawings, which shows a practical embodiment of the inven tion; but I do not restrict myself to the particular form or dimensions or construction of parts therein shown, except as the same may be set forth in the more specific claims followin this description.

11 the drawings, Figure 1 is a plan view of the range, and Fig. 2 is a longitudinal vertical section thereof.

In said drawings, A designates the heating portion of the apparatus, which preferably is double-walled and is supported on a base A, below which is a primary air and gas mixing tube B, which discharges upwardly into a secondary mixing-tube C, provided with airinlets c and a regulating-sleeve C. These parts may be constructed as shown and described in my application for gas-burner, Serial No. 297,236, filed January 22, 1906.

The tube 0 discharges into the lower end. of a tubular burner F, which is preferably provided with internal constrictions f and lateral perforationsf in its walls for the admission of air into the burning gases descending therethrough. Furthermore, this burner is preferably surrounded by a jacket F, which forms an air-chamber around the burner, into which air is admitted through openings or notches at the bottom of jacket F, which is adapted to heat the air to a high degree around the burner before it enters the perforations j". Said burner is suspended from a transverse partition G in the casing A, which partition is perforated, as at g, for the passage of air into the overlying secondary combustion-chamber 2, which is preferably formed of an invcrted-cup-shaped casing H, supported on plate G and adapted to retard the gases flowing therethrough and cause them to descend and escape under the lower edges of said casing by means of aper tures it into the annular flue-space 3 between the sides of said casing and the surrounding walls of the casing A. The said casing I-I, particularly the top late thereof, and all the interior parts of t 10 burner become intcnsely heated, and large volumes of air are commingled with the gases and consumed in this apparatus, which, as thus far described, is preferably constructed as shown and described in my application for gas cookingstoves, Serial No. 297,250, filed January 22, 1906.

The top of the part A is provided with removable griddles or stove-plates a of usual construction, and the products of combustion escape through an outlet a into the range ortion of the apparatus, which is prefera ly so arranged that its to will be on about the same level as the top p ate A, and which range portion in the example shown is approximately rectangular in cross-section and has three chambers or sections I, I, and

against overlying plates a.

I and above the sections I and I are removable griddles or plates a and a which, like the griddle a, is preferably nested, so that the griddles of proper size can be re moved and the opening covered by a cooking utensil, such as a pot or kettle of proper size, as is customary. Each of these sections I, I, and I has an inlet or receiving chamber i, i, and t in its lower portion, into which the hot gases are admitted from the proceding section. The first chamber L in section I receives the hot gases direct from the generator through outlet (b and the chamber i is preferably provided with a perforated top plate J, so that the gas admitted into chamber i will be jetted upwardly against the overlying plates at. Thence thegases have to descend to an outlet-chamber in the section I, from which they pass into the receiving-chamber i in section I, which is preferably covered by plate J, like the correspond ing plate J in chamber I, so that the gases are again directed upward in jets against the overlying plates a after which they can descend into a passage 3 in section I in order to enter the chamber 41 in section I. Section I as shown, is provided with a collar a on its top, on which is placed a water-heater K, which is heated by the escaping gases in section I From the foregoing description it will be observed that the gases generated in the burner F are first trapped in the casing 2, which becomes very highly heated and radiates heat like an incandescent coal-fire upwardly against the overlying plates a. Said plate is also heated by the direct impact of the gases rising in the generator around the casing i Thence the gases flow outward into chamber "L, where they jet upwardly The hottest portion of said jet is delayed there and thence is compelled to descend into chamber 'i of the next section I, rising therein upwardly against the overlying plates a", and again have to descend in order to enter sec tion I wherein they rise upwardly against the bottom of the water-heater. This upand-down flowi'of 'the gases prevents loss of heat by their violent outflow from the range, and the upward jettingjof the products of combustion in the several sections against the overlying plates isa most valuable feature in producing rapid heating of the latter and has the same beneficial quick-heating effect of individual jets in each section.

\Nhile I have shown but two of the sections I and I provided with top plates, obviously the length of the range could be extended so as to include additional sections if a range of increased capacity is desired.

Having thus described my invention, what I therefore claim as new, and desire to secure I by Letters Patent thereon, is

1. In a gas heating-range, the combination of the heating-section and a burner therein producing a volume of intensely-heated gas; with a range portion having a series of sections each provided with removable top plates, a receiving-chamber in each section underlying the top plates, a perforated cover for each receiving-chamber adapted to cause the products of combustion or hot gases to jet upwardly against the overlying plates, and a descending passage communicating with the receivingchamber of the next section.

2. In a range, the combination of a gasburning section; with a series of cookingsections each provided with a lower receivingchamberi at one side and extending horizontally into the section and adapted to receive hot gases from the preceding section and to direct the gases upwardly against the overlying top plates on the section, removable griddles in the top plates, and an outlet from one section into the receiving-chamber of the next succeeding section.

3. In a cooking-range, the combination of a burner-section, a series of range-sections con nected with the outlet of the burner-section and each provided with a receiving-chamber i in its lower portion and extending horizontally into the section and adapted to discharge gases upwardly against the top of the sections and a descending passage j for the escape of the burnt gases at the end of the receiving-chamber, the descending passage of one section communicating with the receiving-chamber of the next section.

4. In a range, the combination of a burner, means for introducing mixtures of air and gas thereinto, a casing inclosing the burner, an outlet for the gases in the side of said casing, and a range-section having a receiving-chamber i in its lower portion at one side a griddle in its top, and a descending flue at its discharge end, whereby the gases are caused to ascend and descend in such section and are jetted upwardly against the overlying griddle.

5. In a gas heatingrange, the combination of the heating-section, and a burner therein for producing a volume of intensely-heated gas; with a range portion having a series of sections each provided with a receivingchamber, a perforated cover for said receiving-chamber adapted to cause the products of combustion to jet upwardly therein, and a descending gas-escape passage at the side of the receiving-chamber, said escape-passage communicating with the receiving-chamber of the next section.

In testimony that I claim the foregoing as my own I aflix my signature in presence of two witnesses.

VIRGIL W. BLANCHARD.

In presence oi JAMES R. MANsFIELD, L. E. WITHAM.

IOO 

